Granted Patent
Utility
US 5,909,900 · App. 08/950,261
Menstruation recording device
Inventor:
Shiomi Fujiwara
Patented Case
View Patent ↗
Granted: Jun 8, 1999
Filed: Oct 14, 1997
Inventor
Shiomi Fujiwara
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.